The raising of 20 new Siege Batteries of the Royal Garrison Artillery was authorised by Army Council Instruction 1497/1916, with effect from 13 July 1916.
| RGA Battery | Raised at |
|---|---|
| 185 Siege Battery | Renamed from former 97 Company RGA on 18 July 1916 |
| 186 Siege Battery | Tynemouth |
| 187 Siege Battery | Plymouth |
| 188 Siege Battery | Pembroke Dock |
| 189 Siege Battery | Harwich |
| 190 Siege Battery | Hartlepool |
| 191 Siege Battery | Clyde |
| 192 Siege Battery | Tay |
| 193 Siege Battery | Liverpool |
| 194 Siege Battery | Newhaven |
| 195 Siege Battery | Fareham |
| 196 Siege Battery | Dover |
| 197 Siege Battery | Mersey |
| 198 Siege Battery | Humber |
| 199 Siege Battery | Sheerness |
| 200 Siege Battery | Weymouth |
| 201 Siege Battery | Plymouth |
| 202 Siege Battery | Portsmouth |
| 203 Siege Battery | Pembroke Dock |
| 204 Siege Battery | Liverpool |
| 205 Siege Battery | Cardiff |